package catalogs

import (
	"encoding/json"
	"os"
	"path/filepath"
	"sync"
)

var _ = json.RawMessage{}
var _ = sync.Mutex{}
var _ = os.ReadFile
var _ = filepath.Join

// One row of RailCarriageConfig — a carriage prefab template.
type RailCarriage4229938 struct {
	Id uint32 `json:"id"`
	TemplateName string `json:"templateName"`
	ViewModelName string `json:"viewModelName"`
	LayoutClass string `json:"layoutClass"`
}

// 
// Reads Configs/RailCarriageConfig.json. The table itself has no seat count
// (seat layout lives inside the prefab), but it tells us which carriage templates share a
// layout — which is what makes the seat-count collection job tractable.
// 
// 
// ★ 为什么需要它（2026-09-27）：
// RailTrainConfig.CarriageIds 给出编组模板序列（1/2 号线 [10,2,2,2,3]、
// 3 号线 [11,7,7,7,8]、4 号线 [4,5,9]、9-14 号线 [12,13,13,13,14]、15 号线 [15]），
// 共 13 个模板。但按 TemplateName + ViewModelName 后缀 归并后只有 8 种布局：
// <code>
// Vehicle01/Head  = 10, 11      （MGA=MoveGroundArea02，F=14 R=11）
// Vehicle01/Mid   = 2, 7        （F=11.2 R=11）
// Vehicle01/Tail  = 3, 8        （revert=true，F=11 R=14）
// Vehicle03/End   = 4, 9        （F/R 互换，同一节车厢镜像）
// Vehicle03/Mid   = 5
// VehicleCX01/Mid = 13
// VehicleCX01/End = 12, 14      （14 是 12 的 revert）
// TourBoat01/View = 15
// </code>
// ⇒ 采集量从 13 个数字降到 8 个；采一趟 1/2 号线就能覆盖 Vehicle01 的头/中/尾，
// 3、7、8、11 可直接类推（同车型不同涂装）。
// ⛔ 现有配置 metroGadgets.seatsByCarriageTemplate 里 4 → 4 座、9 → 6 座 ——
// 这俩是同一车型（Vehicle03/CarriageOnEnd，只是前后镜像），座位数不该不一样。
// 至少有一个是错的，GameRouter 的 metro 分支会把这个矛盾喊出来。
// 
var (
	RailCarriageCatalog4229938_cacheLock sync.RWMutex
	RailCarriageCatalog4229938_cached = false
	RailCarriageCatalog4229938_entries []any
)

// LoadRailCarriageCatalog4229938 loads catalog records from client config directory
func LoadRailCarriageCatalog4229938(configDir string) ([]any, error) {
	RailCarriageCatalog4229938_cacheLock.RLock()
	if RailCarriageCatalog4229938_cached {
		defer RailCarriageCatalog4229938_cacheLock.RUnlock()
		return RailCarriageCatalog4229938_entries, nil
	}
	RailCarriageCatalog4229938_cacheLock.RUnlock()

	RailCarriageCatalog4229938_cacheLock.Lock()
	defer RailCarriageCatalog4229938_cacheLock.Unlock()
	if RailCarriageCatalog4229938_cached { return RailCarriageCatalog4229938_entries, nil }

	filePath := filepath.Join(configDir, "RailCarriageCatalog.json.json")
	data, err := os.ReadFile(filePath)
	if err != nil {
		return nil, err
	}

	var raw struct {
		Records []json.RawMessage `json:"records"`
	}
	if err := json.Unmarshal(data, &raw); err != nil {
		return nil, err
	}

	var result []any
	for _, item := range raw.Records {
		var m map[string]any
		if err := json.Unmarshal(item, &m); err == nil {
			result = append(result, m)
		}
	}

	RailCarriageCatalog4229938_entries = result
	RailCarriageCatalog4229938_cached = true
	return result, nil
}

func RailCarriageCatalog4229938_ById(id uint32) *RailCarriage4229938 {
	// Catalog helper RailCarriageCatalog4229938_ById
	return nil
}

// Layout class of a template id, e.g. "Vehicle01/Head"; null when unknown.
func RailCarriageCatalog4229938_LayoutClassOf(id uint32) *string {
	// Catalog helper RailCarriageCatalog4229938_LayoutClassOf
	return nil
}

// Human label for logs: "10=Vehicle01/Head" / "10(tpl10)" when unknown.
func RailCarriageCatalog4229938_Describe(id uint32) string {
	// Catalog helper RailCarriageCatalog4229938_Describe
	return ""
}

func RailCarriageCatalog4229938_LoadPair() any {
	// Catalog helper RailCarriageCatalog4229938_LoadPair
	var zero any; return zero
}

// 
// Vehicle01/CarriageOnEnd + View_Orange_Tail → Vehicle01/Tail。
// 车型看 TemplateName 前缀，头/中/尾看 ViewModelName 的最后一段。
// 
func RailCarriageCatalog4229938_LayoutClass(templateName string, viewModelName string) string {
	// Catalog helper RailCarriageCatalog4229938_LayoutClass
	return ""
}

func RailCarriageCatalog4229938_U32(source any, name string) uint32 {
	// Catalog helper RailCarriageCatalog4229938_U32
	return 0
}

func RailCarriageCatalog4229938_Str(source any, name string) string {
	// Catalog helper RailCarriageCatalog4229938_Str
	return ""
}